Fun with Logic Problems

We have had such fun working on logic problems this week. We have spent a lot of time this year talking about making "stronger brains". We talked about how athletes get better at their chosen sport through hard work. Good mathematicians must also work hard to grow strong brains. Logic problems are an excellent way to strengthen reasoning skills. We have tried out a few from the site below. See if you can work any of these problems. HAVE FUN!

http://mathcentral.uregina.ca/QandQ/qsearch

Do We Really Need Geometry?

Not sure why you need to know geometry? Check out the video below.

Need a refresher on parallel, perpendicular, and intersecting? This video is a great review.

Practice Edges, Faces, and Vertices 

Solid Geometry

Solid Geometry

 is the geometry of three-dimensional space, the kind of space we live in ...

Three Dimensions

It is called three-dimensional, or 3D because there are three dimensions: width, depth and height.

Properties

Solids have properties (special things about them), such as:

• volume (think of how much water it could hold)
• surface area (think of the area you would have to paint)
• how many vertices (corner points), faces and edges they have

Polyhedra and Non-Polyhedra

There are two main types of solids, "Polyhedra", and "Non-Polyhedra":

Counting Faces, Vertices and Edges

When we count the number of faces (the flat surfaces), vertices (corner points), and edges of a polyhedron we discover an interesting thing:

The number of faces plus the number of vertices
minus the number of edges equals 2

This can be written neatly as a little equation:

F + V − E = 2

It is known as Euler's Formula (or the "Polyhedral Formula") and is very useful to make sure we have counted correctly!

Let's review parallel and perpendicular lines.

http://learnzillion.com